2299015981 has 2 divisors, whose sum is σ = 2299015982. Its totient is φ = 2299015980.

The previous prime is 2299015973. The next prime is 2299015993. The reversal of 2299015981 is 1895109922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2076260356 + 222755625 = 45566^2 + 14925^2 .

It is a cyclic number.

It is not a de Polignac number, because 2299015981 - 2³ = 2299015973 is a prime.

It is a super-2 number, since 2×2299015981² = 10570948961786784722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2299012981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1149507990 + 1149507991.

It is an arithmetic number, because the mean of its divisors is an integer number (1149507991).

Almost surely, 2^2299015981 is an apocalyptic number.

It is an amenable number.

2299015981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2299015981 is an equidigital number, since it uses as much as digits as its factorization.

2299015981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 2299015981 is about 47948.0550283325. The cubic root of 2299015981 is about 1319.8178469571.

The spelling of 2299015981 in words is "two billion, two hundred ninety-nine million, fifteen thousand, nine hundred eighty-one".